And asa d



CHANDLER & REED.

Grain Winnower.

' Patented Deb. 7, 1844.

N. PETERS. Fllolo-Lilhogrnphur. Walhinglon, D. c.

UNITED STATES PATENT OFFICE.

THOMAS A. CHANDLER, OF ROCKFORD, ILLINOIS, AND ASA D. REED, OF NILES,MICHIGAN.

wINNowIivG-MAoHINE.

Specification of Letters Patent No. 3,852, dated December 7, 1844;.

To all whom it may concern Be it known that we, THOMAS A. CHAND- LER, ofRockford, Winnebago county, State of Illinois, and AsA D. REE of Niles,Berrien county, Michigan State, have invented a new and useful Machinefor Cleaning Grain, which is described as follows, reference being hadto the annexed drawings of the same, making part of this specification.

Figure 1 is a top view of the machine. Fig. 2 is a side elevation ofditto. Fig. 3 is a transverse section of the screen. Fig. 4, is avertical longitudinal section of the machine.

.The fan A and frame B supporting it are made similar to others in use.The axle C of the fan extends through and beyond the sides of the framehaving on one of its ends a pulley D and on its opposite end two pulleysE F. A band G is passed around the pulley F and around a small groovedpulley H on a revolving axle I that shakes the shoes containing a seriesof parallel inclined elastic rods or wires J upon which and throughwhich the grain and chaff and dirt are discharged and over which thestraw is shaken, by the alternate vertical movement of the lower end ofthe shoes derived from the revolving shaft I containing square shoulders8 upon which it rests; the straw is discharged at the lower end of thescreen. The opposite end of said shaft I turns in the frame B. There isa larger grooved pulley K around which is passed a band leading aroundthe small grooved pulley D on the axle of the main fan. The aforesaidpulley K is placed on a short revolving axle L, called the crank axle;on which there is fixed a crank by which the machine is operated. Thereis a secondary fan M for completing the operation of cleaning the grainplaced within a circular case N fastened to the side of the frame 13having a tangential outlet 12 made in the periphery of the lower orunder part of said case for directing the blast of wind in the courserequired. This secondary fan is revolved by means of a small groovedpulley P on its axle around which is passed a band leading around thebefore named pulley E on the axle of the main fan.

The shoe S is suspended at one end by a where. they rest on theaforesaid square shoulders of the transverse revolving shaft I asrepresented at a in Fig. 3. Its top .9 which extends from the upperedges half its length and upon which the grain and straw are firstreceived from the hopper inclines at an angle of about ten degrees witha horizontal plane and is called the apron. From. the lower edge of thisinclined plane or apron S the aforesaid parallel elastic wires J extendthat form the screen. The

lower and outer ends thereof are detached 'upper, ends which are underthe apron are passed through perforations in two transverse parallelcleats screwed to the under side of the apron. The hopper X which ismade in the usual manner is arranged above the aforesaid apron. As theshaft I revolves the corners of the square shoulders thereon lift theshoes of the screen and being turned alternately let it fall again andin this manner the screen is vibrated vertically.

The grain and impurities among it are received from the elastic screenby an inclined trough T placed below the screen which conveys the grain&c., to the blast of the secondary fan M where the operation of cleaningthe grain is completed, the grain and impurities descending over thelower edge of the trough or spout or conveyer until they meet the blastwhen the impurities, which are lighter than the grain, are blown beneaththe said inclined conveyer into a second inclined conveyer U whichinclines in a contrary direct-ion from the one above de scribed, whilethe grain continues to descend to a receiver V placed below being tooheavy to be blown away by the blast which is graduated to suit theweight of the grain to be cleaned. As there are various kinds of grainto be cleaned containing impurities of diiferent degrees of specificgravity it is necessary to have an inclined sliding gage board W' placedupon the bottom of the secondary inclined conveyer and moved upward whenthe impurities are heavy in order to catch them as soon as acted on bythe blast and the grain from the straw and chaff by means The mannerherein set forth of separating V of a screen constructed with parallelelastic wires fixed at one end and free to move at their other endsmerely resting upon the frame of the screen, said screen vibrating upand down by which means the elastic movement of the Wires opens thestraw and thus gives full action to the blast.

THOS. A. CHANDLER. ASA D. REED.

Witnesses: c c WM. P. ELLIOT,

EDW. MAHER.

